Yesterday I updated my OS from 5.0.0.1036 to official OS released by Telefonica Spain which is 5.0.0.1049. After I upgraded, I installed also the chinese font, including the simplified pinyin input. But after the installing was done, I can see the language of chinese displayed, but I can't set my input method to pinyin. If I installed other chinese input, such as WuBiHua, it can be chosen, but i can't do that only for pinyin.

I tried rolling back to 5.0.0.1036, but the menu still could not appear.
Can anyone help me ?

Do not know that you are not using the alt + enter can not be found or that can not find it in the set up inside? Theoretically if you install the pin yin input language text input see you installed input method. But there is another possibility, is not your pinyin is autotext? If so, then you can not use a lt + enter to select, you can look at your aotutext